LayerOverlay¶

Namespace: ThinkGeo.UI.Android

This class represents a group of layers; each layer can be of any layer type.

public class LayerOverlay : TileOverlay, System.IDisposable

Inheritance Object → OverlayBase → Overlay → TileOverlay → LayerOverlay
Implements IDisposable

Remarks:

This class represents a group of layers; each layer can be of any layer type.

Properties¶

Layers¶

Gets a GeoCollection that contains the layers that will draw on the image.

public GeoCollection<Layer> Layers { get; }

Property Value¶

GeoCollection<Layer>
A GeoCollection of layers.

Remarks:

The Layers property holds all of the layers that are used by the Draw method. The Draw method loops through all layers to filter out features and draw on the image with the specified styles.

IsEmpty¶

This property indicates whether this overlay is empty or not.

public bool IsEmpty { get; }

Property Value¶

Boolean
true if this overlay is empty; otherwise, false.

LayerType¶

Gets or sets the LayerType of the Overlay.

public LayerType LayerType { get; set; }

Property Value¶

LayerType

TileSizeMode¶

public TileSizeMode TileSizeMode { get; set; }

Property Value¶

TileSizeMode

TileWidth¶

Gets or sets the width of the tile.

public int TileWidth { get; set; }

Property Value¶

Int32
The width of the tile.

TileHeight¶

Gets or sets the height of the tile.

public int TileHeight { get; set; }

Property Value¶

Int32
The height of the tile.

IsCacheOnly¶

Gets or sets a value indicating whether this instance is cache only.

public bool IsCacheOnly { get; set; }

Property Value¶

Boolean
true if this instance is cache only; otherwise, false.

TileCache¶

Gets or sets the tile cache.

public RasterTileCache TileCache { get; set; }

Property Value¶

RasterTileCache
The tile cache.

TileType¶

Gets and sets the overlay is formed by multiple tiles or single tile.

public TileType TileType { get; set; }

Property Value¶

TileType
The type of the tile.

TileSnappingMode¶

Gets or sets the tile snapping mode.

public TileSnappingMode TileSnappingMode { get; set; }

Property Value¶

TileSnappingMode
The tile snapping mode.

TransitionEffect¶

Gets or sets the tile transition effect.

public TransitionEffect TransitionEffect { get; set; }

Property Value¶

TransitionEffect
The tile snapping mode.

OverlayView¶

Gets or sets the overlay view.

public MapLayout OverlayView { get; set; }

Property Value¶

MapLayout
The overlay view.

IsVisible¶

public bool IsVisible { get; set; }

Property Value¶

Boolean

Name¶

Gets or sets the name of this overaly.

public string Name { get; set; }

Property Value¶

String

DrawingExceptionMode¶

This property gets and sets the DrawingExceptionMode used when an exception occurs during drawing.

public DrawingExceptionMode DrawingExceptionMode { get; set; }

Property Value¶

DrawingExceptionMode
The drawing exception mode.

MapArguments¶

Gets or sets the map arguments.

public MapArguments MapArguments { get; set; }

Property Value¶

MapArguments
The map arguments.

Attribution¶

Gets or sets the attribution.

public string Attribution { get; set; }

Property Value¶

String
The attribution.

DrawingQuality¶

Gets or sets the drawingQuality for this overlay.

public DrawingQuality DrawingQuality { get; set; }

Property Value¶

DrawingQuality

Opacity¶

Gets or sets the opacity for this overlay.

public double Opacity { get; set; }

Property Value¶

Double

Constructors¶

LayerOverlay()¶

Initializes a new instance of the LayerOverlay class.

public LayerOverlay()

LayerOverlay(IEnumerable<Layer>)¶

Constructor of LayerOverlay class.

public LayerOverlay(IEnumerable<Layer> layers)

Parameters¶

layers IEnumerable<Layer>
This parameter indicates a layer collection which needs to be drawn.

Methods¶

GetTileCore(Context)¶

Chooses a tile object to form the TileOverlay. When overriding this method, consider the initialize parameters setting on the tile.

protected TileView GetTileCore(Context context)

Parameters¶

context Context
Interface to global information about an application environment.

Returns¶

TileView
A tile object to form the TileOverlay.

GetBoundingBoxCore()¶

This method gets a bounding box that holds all the layers which are added in this overlay.

protected RectangleShape GetBoundingBoxCore()

Returns¶

RectangleShape
A RectangleShape value that holds all the layers which are added in this overlay.

OpenCore()¶

protected void OpenCore()

CloseCore()¶

protected void CloseCore()

Events¶

DrawingException¶

Occurs before exception is drawing on map.

public event EventHandler<DrawingExceptionOverlayEventArgs> DrawingException;

DrawnException¶

Occurs after exception is drawn on map.

public event EventHandler<DrawnExceptionOverlayEventArgs> DrawnException;

Drawing¶

This event raises before the overlay is drawing.

public event EventHandler<DrawingOverlayEventArgs> Drawing;

Drawn¶

This event raises after the overlay is drawn.

public event EventHandler<DrawnOverlayEventArgs> Drawn;